Justin Bieber: through the years

Justin Bieber through the years: A look back at the Sorry singer's changing look over the years – form his early sining career to relationship with Selena Gomez

The offences are said to involve 157 victims from all around the world, including up to 20 in the UK and 50 in the United States.

These are said to date back to 2007.

Justin Bieber is currently in Australia[Getty]

Detective Inspector Jon Rouse of the Queensland Police Service said: "This investigation demonstrates both the vulnerability of children that are utilising social media and communication applications."

He continued: "And the global reach and skill that child sex offenders have to groom and seduce victims."

He said: "The fact that so many children could believe that they were communicating with this particular celebrity highlights the need for a serious rethink about the way that we as a society educate our children about online safety."

Bieber is on the final week of his Australian tour which ends on March 15.